Dishwashing machine



March 1, 1932. DOLEN 1,847,386

DISHWASHING MACHINE Filed Feb. 20, 1930 4 Sheets-Sheet 1 March 1, 1932.

P. DOLEN DISHWASHING MACHINE Filed Feb. 20, 1930 4 Sheets-Sheet 2 A BDolen 3nventor March 1, 1932. i p, DOLEN 1,847,386

DISHWASHING MACHINE Filed Feb. 20, 1930 4 Sheets-Sheet 3 W; W if W March 1, 1932. p DOLEN 1 847386 DI SHWASHING MACHINE Filed Feb. 20, 1930 4 Sheets-Sheet 4 3nnentor Patented Mar. -1, 1932 UNITED STATES PATENT- orrlcs' Y rm'rm 120mm, or Bremen, mnasxa I nrsnwasnnm macnmn Application med February 20, 1930. Serial No. 429,909.

This invention relates to a dish washing machine and has for its object, broadly, to provide a machine particularly adapted for ousehold use which will be complete for washing, rinsing anddrying dishes, said ma-. chine to be of such Construction that it will -be convenient and durable, and to consist of fewand simple parts so that it may be manufactured at a limited cost. One of the specific objectsof-the invention is to provide means for concentrating and directin water with greater force than ordinary or washing the dishes.

Another object is to provide a combined dish rack and tray of arcuate form including foraminous pockets or receptacles for use in connection with a water trough of specific construction anda particular arrangement of movable dasher-blades for throwing water. v

The invention includes a specific form for the trough at the bottom of the tub so that all of the water will be forcibly moved by action of the dasher-blades and that only a limited quantity of water will be required for operation. The invention also includes a spe-- cific form for a combined rack and tray found to be of great advanta for use in' connection with the nested das ers of the shafts and the trough of the tub.

With the foregoin objects in view and others to bementione the invention resents a new and usefulconstruction, com ination and arrangement of parts as described herein and claimed, and as shown in the accompanying drawings, it being understood that the drawings illustrate only one embodiment of the invention and that changes in form,

made without departing from the spirit of the invention or sacrificing any of .its advantages, said'changes bein withm the scope of the invention as claimed.

In the drawings, Fig. 1 is a view in side elevation, partly broken away, of the dish washing machine. Fi 2 is a view ofa spraying attachment used or rising the dishes. Fig. 3

is an end view, partly broken away, of the Fig. 4 is a view showing a pair of machine. I

shafts in transverse sect on and operating size proportions and minor details may be showing pairs of-opposed dasher-blades for said shafts.

arrangement of the pair of operating shafts and their dasher-blades. Fig. 6 is an end view of a combined dish-rack and tray used in some instances, and Fig. 7 is aside view of the same. I

Fig.. 8 is a detail illustrating the tub in transverse section to closely show its trough and the operating parts of the machine. Fig. 9 is a side .view of one of the dish-holders for the combined rack and tray generally used for dish-washing and shown in Figs. 3 and 8, and Fig. 10 is an end view of the same. Fig. 11 is a detail showing a pair of transversely inclined dasher-blades for an operating shaft, the latter being in section. Fig. 12 is a plan or side view showing a part of an operatin shaft and a pair of'transversely inclined asherblades mounted thereon.

Referrin now to the drawings for a more particular escription, the invention is shown and described in connection with a frame 13 elevation, and strips of angle-iron are pre-' ferred for the frame.

Numeral 14 indicates a tub which is rectangular'in plan. The sides and ends of the tub are suitably secured to the upper parts of the frame,-and the open top of the tub is provided with a lid 15. a

By referring to Figs. 3 and ings it will be noted that the curved bottom a of the tub is provided, midway between its 8 of the (1.....-

sides, with a depression or trough, said trough providing a pair of opposedconcave surfaces b, that part of the bottom .ofthe trough between the uniformly concave surfaces 6, being flat as indicated at c. This trou h and its opposted concave surfaces are used or oertain purposes to be hereinafter described.

I provide a combined dish-holder and tray consisting of a pair of inverted V-shaped bars or frame-members 16 connected at their ends by means of cross-strips 17 handles 18 being provided for said strips or bars 16 for use in removing the. tray from its supports 19 or baskets or dish-holders for placing it in operative position on said supports.

Numerals 20 indicate elongated foraminous best shown in Figs. 9 and 10 of the drawings, its top with a pair of rods 21 adapted to be mounted in loops 22 of the metallic strands used in the construction of said baskets, said rods 21 being adapted to be disposed in notches mwhich open upon the top of the bars 16.

The construction selected for the dish-holders or baskets 20 is not a matter of importance, except that it is necessary to permit water to move freely therethrough so that the dishes therein may become washed and rinsed when water is thrown, dashed or splashed from the trough by means to be described. Also it is necessary that the baskets and dishes therein shall be completely exposed when the water is thrown upwardlyfrom the trough, and therefore the baskets 20 are disposed in space relation, and each basket extends downwardly toward the trough from the V-shaped frame In operation, it will be understood that the combined dish-holder and tray may be placed in its operative-position shown in Figs. 1, 3 and 8 of the drawings and may, by use of, the handles 18, be readily removed, and whenever desired, the baskets 20 may be removed from the arcuate frame.

Numerals 23 indicate a pair of parallel shafts which are journalled at their ends in bearings 24 supported by the frame, and by means of suita le pack nuts 25 any leakage from the trough will be prevented during the rotatable-movements of the shafts.

It will be noted that the operating-shafts are disposed parallel, side by side in the trough and that each concave surface I) of the trough is concentric with the shaft adjacent I approximately thereto.

Each shaft 23 is provided with a plurality of dasher-blades 26. By referring to the drawings it will be seen that each shaft at one of its sides is provided with aligningblades 26 disposed in spaced relation and that recesses 27 are formed between said blades, the opposite side of each shaft also being provided with similar dasher-blades 26 disposed in alignment recesses 27 therebetween, respective the blades at the sides .of the shafts being disposed 180 degrees from each other. As best shown in Fig. 5, each shaft 23 is provided with a gear wheel 28 and since these wheels are in engagement the shafts will rotate in reverse directions. One of the shafts is provided' with a pulley 29, and by means of a band 30 which engages the pulley 29 and the piulley of the shaft of the" electric motor 31, t e shafts 23 may be rotated.

While I have shown and described specific the shafts 23, and prefer each provided at and with similar the exact construction as described, I do not wish to be understood as limiting myself with exactness to these features nor to any feature or detail except those found to be new and of great convenience in operation.

It will be appreciated that the use of the trough in which the dasher-blades are nested is of great advantage since the blades move closely adjacent to the concave surfaces 1), and since the blades of each shaft, during operation, move through the recesses between the blades of the other shaft, the working parts are concentrated within a limited space, and therefore only a limited quantity of water will be required for each dish-washing or cleansing operation.

Numeral 32 indicates a waste pipe provided with a valve 33, and any suitable arrangement may be made for discharging water from the trough. In operation a sufficient quantity of hot water is placed in the trough to cause the blades 26 to be partly submerged, and the rotation of the shafts will cause the water to be violently thrown against the baskets and dishes therein to cause almost immediate washing.

Numeral 3 1 indicates an intake pipe for water fed through a horizontal supply pipe 34a for conducting water to the trough under control of a valve 35, and numeral 36 indicates a supply pipe for fluid under pressure used for spraying or cleansing the dishes, this pipe being under control of a valve 37, and for this last named purpose the spraying device 38 is used and may be connected with the pipe 36, the lid 15 being removed to permit the use of said spraying device.

Numeral 39 (Figs. 6,7) includes a modified form for a dish-holder. It consists in part, of a pair of arcuate strips 40, said strips bemg connected at their upper and lower edges and ends with rods 41, and the lower rods 11 being connected by means of strands 42. It will be understood that the dish-holder 39, as described, operates also as a tray and by use of its handles 43 may be placed in operative position and supported upon the lugs or brackets 19 as a substitute for the combined dish-holder and tray already described.

Numerals 44: (Fig. 4) illustrates longitudinally curved dasher-blades for the pair of operating-shafts, and these blades may be used if desired, the arrangement of said blades being in spaced relation at the opposite sides of the shafts the same as heretofore described. Also, as best shown in Figs. 11 and 12 of the drawings, dasher-blades 45 may be used if desired. These blades are inclined transversely. They are disposed in spaced relation at opposed sides of the shafts 23, and

since the transverse inclination of the blades Y at one side of a shaft is reverse to the inclination of the blades at the opposite side thereof, the water will be thrown angularly against the baskets and dishes to great advantage.

In operation, water will be thrown u wardly and at nearly all angles from t e trough against the basket, and dishes therein, and water which moves through the baskets will be deflected from the lid 15 and will again be thrown against the dishes. Numeral 46 indicates a separate basket for containing will be required than by any other construction.

I claim as my invention,-

In a dish washing machine, a tub having the lower portions of its side walls gradually curved downwardly and inwardly toward one another, then extending downwardly substantially parallel to one another, and a flat bottom joining said side walls together, to provide a narrow liquid receiving trou h, an inverted. V-shaped bar supported withln the tub and by said side walls above the trough, a plurality of foraminous dish holding baskets suspended from said bar, and means in said trough for directing liquid therein up the curved side walls and through the baskets.

In testimony whereof, I aflix my signature.

. 'PRATHER DOLEN. 

